Image capturing optical system, image capturing device and electronic device

ABSTRACT

The present disclosure provides an image capturing optical system comprising: a positive first lens element having a convex object-side surface; a negative second lens element having a concave object-side surface; a third lens element; a fourth lens element having a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface thereof being aspheric; a fifth lens element having a concave image-side surface concave, both of the object-side surface and the image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one convex shape in an off-axis region thereof.

RELATED APPLICATIONS

This application is a continuation application of U.S. application Ser.No. 16/053,949 filed on Aug. 3, 2018, now approved and which is acontinuation application of U.S. application Ser. No. 15/475,363 filedon Mar. 31, 2017 and which is a continuation application of U.S.application Ser. No. 15/092,240 filed on Apr. 6, 2016, now issued toU.S. Pat. No. 9,645,363 and which is a divisional application of U.S.application Ser. No. 14/534,986 filed on Nov. 6, 2014, now issued toU.S. Pat. No. 9,341,820 and claims priority under 35 U.S.C. 119(e) toTaiwan Application Serial No. 103129318 filed on Aug. 26, 2014, theentire contents of which are incorporated by reference herein.

BACKGROUND Technical Field

The present disclosure relates to an image capturing optical system andan image capturing device, and more particularly, to an image capturingoptical system and an image capturing device applicable to electronicdevices.

Description of Related Art

As personal electronic products nowadays has been becoming more and morecompact, the internal components of the electronic products are alsorequired to be smaller in size than before. Except for the demand ofminiaturization, the advanced semiconductor manufacturing technologiesreducing the pixel size of sensors have also pushed compact opticalsystems to evolve toward the field of higher megapixels. In addition,the popularity of smart phones and tablet personal computers alsosignificantly increases the requirements for high resolution and imagequality of present compact optical systems. Therefore, there is also anincreasing demand for compact optical systems featuring better imagequality.

In a conventional five-element optical system, the fourth lens elementgenerally has a convex image-side surface. However, under thisconfiguration, the convex image-side surface of the fourth lens elementhas a larger curvature and the variation of the thickness of the lens ismore pronounced, thus shortcomings, such as formation difficulties oflenses and excessive optical sensitivity may occur easily. Moreover, therefractive power of the second lens element in the conventionalfive-element optical system is usually poorly distributed and unable toeffectively balance the positive refractive power of the first lenselement, thus the light will bend drastically and the aberration cannotbe eliminated easily.

Therefore, a need exists in the art for an optical system that featurescompact size, better image quality, and an appropriate sensitivity ofthe system.

SUMMARY

According to one aspect of the present disclosure, an image capturingoptical system, comprising, in order from an object side to an imageside: a first lens element with positive refractive power having anobject-side surface being convex in a paraxial region thereof; a secondlens element with negative refractive power having an object-sidesurface being concave in a paraxial region thereof; a third lens elementwith refractive power; a fourth lens element with refractive powerhaving an object-side surface being convex in a paraxial region thereofand an image-side surface being concave in the paraxial region thereof,the object-side surface and the image-side surface thereof beingaspheric; and a fifth lens element with refractive power having animage-side surface being concave in a paraxial region thereof, anobject-side surface and the image-side surface thereof being aspheric,at least one of the object-side surface and the image-side surfacehaving at least one convex shape in an off-axis region thereof; whereinthe image capturing optical system has a total of five lens elementswith refractive power and an air gap is arranged between any twoadjacent lenses with refractive power; wherein a focal length of thesecond lens element is f2, a focal length of the first lens element isf1, a curvature radius of the object-side surface of the second lenselement is R3, an axial distance between the first lens element and thesecond lens element is T12, an axial distance between the second lenselement and the third lens element is T23, an axial distance between thethird lens element and the fourth lens element is T34, an axial distancebetween the fourth lens element and the fifth lens element is T45, andthe following conditions are satisfied:

−0.88<f2/f1<0;

0<R3/f2; and

0.25<T12/(T23+T34+T45).

According to another aspect of the present disclosure, an imagecapturing optical system comprising, in order from an object side to animage side: a first lens element with positive refractive power havingan object-side surface being convex in a paraxial region thereof; asecond lens element with negative refractive power having an object-sidesurface being concave in a paraxial region thereof; a third lens elementwith refractive power; a fourth lens element with refractive powerhaving an object-side surface being convex in a paraxial region thereofand an image-side surface being concave in a paraxial region thereof,the object-side surface and the image-side surface thereof beingaspheric; and a fifth lens element with refractive power having anobject-side surface being convex in a paraxial region thereof and animage-side surface being concave in a paraxial region thereof, theobject-side surface and the image-side surface thereof being aspheric,the image-side surface having at least one convex shape in an off-axisregion thereof; wherein the image capturing optical system has a totalof five lens elements with refractive power and an air gap is arrangedbetween any two adjacent lens elements with refractive power; wherein afocal length of the second lens element is f2, a focal length of thefirst lens element is f1, a curvature radius of the object-side surfaceof the second lens element is R3, and the following conditions aresatisfied:

−1.0<f2/f1<0; and

0<R3/f2.

According to yet another aspect of the present disclosure, an imagecapturing device comprises the aforementioned image capturing opticalsystem and an image sensor.

According to yet another aspect of the present disclosure, an electronicdevice comprises the aforementioned image capturing device.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be more fully understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1A is a schematic view of an image capturing device according tothe 1st embodiment of the present disclosure;

FIG. 1B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 1stembodiment;

FIG. 2A is a schematic view of an image capturing device according tothe 2nd embodiment of the present disclosure;

FIG. 2B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 2ndembodiment;

FIG. 3A is a schematic view of an image capturing device according tothe 3rd embodiment of the present disclosure;

FIG. 3B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 3rdembodiment;

FIG. 4A is a schematic view of an image capturing device according tothe 4th embodiment of the present disclosure;

FIG. 4B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 4thembodiment;

FIG. 5A is a schematic view of an image capturing device according tothe 5th embodiment of the present disclosure;

FIG. 5B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 5thembodiment;

FIG. 6A is a schematic view of an image capturing device according tothe 6th embodiment of the present disclosure;

FIG. 6B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 6thembodiment;

FIG. 7A is a schematic view of an image capturing device according tothe 7th embodiment of the present disclosure;

FIG. 7B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 7thembodiment;

FIG. 8A is a schematic view of an image capturing device according tothe 8th embodiment of the present disclosure;

FIG. 8B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 8thembodiment;

FIG. 9A is a schematic view of an image capturing device according tothe 9th embodiment of the present disclosure;

FIG. 9B shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing device according to the 9thembodiment;

FIG. 10A is a schematic view of an image capturing device according tothe 10th embodiment of the present disclosure;

FIG. 10B shows spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing device according to the 10thembodiment;

FIG. 11A shows a smart phone with an image capturing device of thepresent disclosure installed therein;

FIG. 11B shows a tablet personal computer with an image capturing deviceof the present disclosure installed therein; and

FIG. 11C shows a wearable device with an image capturing device of thepresent disclosure installed therein.

DETAILED DESCRIPTION

The present disclosure provides an image capturing optical systemcomprising, in order from an object side to an image side: a first lenselement with refractive power; a second lens element with refractivepower; a third lens element with refractive power; a fourth lens elementwith refractive power; and a fifth lens element with refractive power;wherein the image capturing optical system has a total of five lenselements with refractive power.

In the aforementioned image capturing optical system, every two lenselements of the first lens element, the second lens element, the thirdlens element, the fourth lens element and the fifth lens element have atleast one air gap in between. Each of the first through fifth lenselements is a single and non-cemented lens element. That is, any twolens elements adjacent to each other are not cemented, and there is aspace between the two lens elements. Moreover, the manufacturing processof the cemented lenses is more complex than the non-cemented lenses. Inparticular, a second surface of one lens element and a first surface ofthe following lens element need to have accurate curvature to ensurethese two lens elements will be highly cemented. However, during thecementing process, those two lens elements might not be highly cementeddue to misalignment issues and it is thereby not favorable for the imagequality of the image capturing optical system. Therefore, the imagecapturing optical system of the present disclosure provides fivenon-cemented lens elements for improving the problem generated by thecemented lens elements.

The first lens element has positive refractive power, so that itprovides the optical system with the positive refractive power as itneeds to be so as to reduce the total track length of the imagecapturing optical system. The first lens element has an object-sidesurface being convex in a paraxial region thereof so that it isfavorable for adjusting the distribution of the positive refractivepower and thereby reducing the total track length.

The second lens element has negative refractive power, so that it isfavorable for correcting the aberration created by the first lenselement. The second lens element has an object-side surface beingconcave in a paraxial region thereof so as to improve the aberrationcorrection ability, and the image-side surface of the second lenselement may have at least one convex shape in an off-axis region thereofto facilitate the correction of off-axis aberration.

The third lens element may have positive refractive power, which isfavorable for reducing the spherical aberration so as to improve theimage quality.

The fourth lens element has an object-side surface being convex in aparaxial region thereof and an image-side surface being concave in aparaxial region thereof so that the astigmatism can be favorablycorrected to improve the image quality.

The fifth lens element may have negative refractive power so that theback focal length of the image capturing optical system can be favorablyshortened and thereby to keep the image capturing optical systemcompact. The fifth lens element may have positive refractive power sothat the sensitivity of the system can be favorably reduced. The fifthlens element has an object-side surface being convex in a paraxialregion thereof and an image-side surface being concave in a paraxialregion thereof so as to facilitate enhancing the correction of theastigmatism of the system. When at least one of the object-side surfaceand the image-side surface of the fifth lens element has at least oneconvex shape in an off-axis region thereof, the incident angle of thelight projecting onto an image sensor from the off-axis field can beeffectively suppressed to increase the receiving efficiency of the imagesensor and thereby to further correct the aberration of the off-axisfield.

When a focal length of the second lens element is f2, a focal length ofthe first lens element is f1 and the following condition is satisfied:−1.0<f2/f1<0, the second lens element has stronger negative refractivepower so that the convergence of light effected by the positiverefractive power of the first lens element can be balanced moreeffectively, thereby preventing drastic deviation of light andaberration. Preferably, the following condition is satisfied: of−0.88<f2/f1<0; more preferably, the following condition is satisfied:−0.75<f2/f1<0.

When a curvature radius of the object-side surface of the second lenselement is R3, the focal length of the second lens element is f2, andthe following condition is satisfied: 0<R3/f2, the aberration can befavorably corrected.

When an axial distance between the first lens element and the secondlens element is T12; an axial distance between the second lens elementand the third lens element is T23; an axial distance between the thirdlens element and the fourth lens element is T34; an axial distancebetween the fourth lens element and the fifth lens element is T45, andthe following condition is satisfied: 0.25<T12/(T23+T34+T45), thedistance between any two lens elements will be more appropriate, andthis is favorable for assembling the system and keeping the systemcompact. Preferably, the condition of 0.60<T12/(T23+T34+T45)<4.0 issatisfied.

When an f-number of the image capturing optical system is Fno, and thefollowing condition is satisfied: Fno<1.85, it is favorable forobtaining the advantages of large aperture and improving the peripheralillumination of the optical system.

When half of the maximal field of view of the image capturing opticalsystem is HFOV, and the following condition is satisfied:0<tan(HFOV)<0.45, it is favorable for the image capturing optical systemto obtain a desirable field of view.

When a focal length of the image capturing optical system is f, a focallength of any one of the first lens element, the second lens element,the third lens element, the fourth lens element and the fifth lenselement is fx (that is, x is 1, 2, 3, 4 or 5), and the followingcondition is satisfied: 6.0<Σ″f/fx|, the distribution of the refractivepower of the image capturing optical system is more balanced and therebyto facilitate reducing the sensitivity of the system.

When a central thickness of the first lens element is CT1, a centralthickness of the second lens element is CT2, a central thickness of thethird lens element is CT3, and the following condition is satisfied:1.0<CT1/(CT2+CT3), the manufacturing yield rate can be favorablyincreased.

When the maximum index among the indexes of the first lens element, thesecond lens element, the third lens element, the fourth lens element andthe fifth lens element is Nmax, and the following condition issatisfied: 1.50<Nmax<1.75, it is favorable for properly selecting thematerials for the lens elements so that the design of the system can bemore flexible.

When an effective radius of the object-side surface of the first lenselement is SD11, an effective radius of the image-side surface of thefifth lens element is SD52, and the following condition is satisfied:1.0<SD11/SD52<1.6, the off-axis field aberration correction can befavorably enhanced.

When the image capturing optical system can further comprise a prismdisposed between the image-side surface of the fifth lens element and animage surface, the prism can be used to change the optical path andthereby to meet the design requirements for compact electronic devices.

When the focal length of the second lens element is f2, the focal lengthof any one of the first lens element, the third lens element, the fourthlens element and the fifth lens element is fy, that is, y is 1, 3, 4 or5, and the following condition is satisfied: |f2|<|fy|, the refractivepower of the second lens element is more appropriate so as to balancethe distribution of the refractive power of the system and to providegreater aberration corrections.

When the image capturing optical system can further comprise an imagesurface, a curvature radius of the image surface is Rimg, and thefollowing condition is satisfied: −500 [mm]<Rimg<−20 [mm], the field ofcurvature can be effectively corrected to significantly increase theaccuracy of focusing.

When a focal length of the fourth lens element is f4, a curvature radiusof the image-side surface of the third lens element is R6 and thefollowing condition is satisfied: −0.5<f4/R6<2.0, the astigmatism andspherical aberrations can be reduced.

According to the image capturing optical system of the presentdisclosure, the lens elements thereof can be made of glass or plasticmaterial. When the lens elements are made of glass material, thedistribution of the refractive power of the image capturing opticalsystem may be more flexible to design. When the lens elements are madeof plastic material, the manufacturing cost can be effectively reduced.Furthermore, surfaces of each lens element can be arranged to beaspheric (ASP), since the aspheric surface of the lens element is easyto form a shape other than spherical surfaces so as to have morecontrollable variables for eliminating the aberration thereof, and tofurther decrease the required number of the lens elements. Therefore,the total track length of the image capturing optical system can bereduced.

According to the image capturing optical system of the presentdisclosure, each of an object-side surface and an image-side surface hasa paraxial region and an off-axis region. The paraxial region refers tothe region of the surface where light rays travel close to the opticalaxis, and the off-axis region refers to the region of the surface awayfrom the paraxial region. Particularly, when the lens element has aconvex surface, it indicates that the surface is convex in the paraxialregion thereof; when the lens element has a concave surface, itindicates that the surface is concave in the paraxial region thereof.Likewise, when the region of refractive power or focus of a lens elementis not defined, it indicates that the region of refractive power orfocus of the lens element is in the paraxial region thereof.

According to the image capturing optical system of the presentdisclosure, an image surface of the image capturing optical system,based on the corresponding image sensor, can be flat or curved,especially a curved surface being concave facing towards the object sideof the optical imaging system.

According to the image capturing optical system of the presentdisclosure, the image capturing optical system can include at least onestop, such as an aperture stop, a glare stop or a field stop. Said glarestop or said field stop is for eliminating the stray light and therebyimproving the image resolution thereof.

According to the image capturing optical system of the presentdisclosure, an aperture stop can be configured as a front stop or amiddle stop. A front stop disposed between an imaged object and thefirst lens element can provide a longer distance between an exit pupilof the image capturing optical system and the image surface and therebyimproves the image-sensing efficiency of an image sensor. A middle stopdisposed between the first lens element and the image surface isfavorable for enlarging the field of view of the image capturing opticalsystem and thereby provides a wider field of view for the same.

The present image capturing optical system can be optionally applied tomoving focus optical systems. According to the image capturing opticalsystem of the present disclosure, the image capturing optical system isfeatured with good correction ability and high image quality, and can beapplied to 3D (three-dimensional) image capturing applications, inproducts such as digital cameras, mobile devices, digital tablets, smartTV, wireless monitoring device, motion sensing input device, drivingrecording system, rear view camera system, wearable devices and otherelectronic devices.

According to the present disclosure, an image capturing device isprovided. The image capturing device includes the image capturingoptical system according to the aforementioned image capturing opticalsystem of the present disclosure, and an image sensor, wherein the imagesensor is disposed on an image surface of the aforementioned imagecapturing optical system. As a result, it is favorable for improving theresolving power and illumination so as to achieve the best imagequality. Preferably, the image capturing device can further include abarrel member, a holding member or a combination thereof.

In FIG. 11A, FIG. 11B and FIG. 11C, an image capturing device 1101 maybe installed in but not limited to an electronic device, including asmart phone 1110, a tablet personal computer 1120 or a wearable device1130. The three exemplary figures of different kinds of electronicdevice are only exemplary for showing the image capturing device ofpresent disclosure installing in an electronic device and is not limitedthereto. Preferably, the electronic device can further include but notlimited to display, control unit, random access memory unit (RAM) a readonly memory unit (ROM) or a combination thereof.

According to the above description of the present disclosure, thefollowing 1st-10th specific embodiments are provided for furtherexplanation.

1st Embodiment

FIG. 1A is a schematic view of an image capturing device according tothe 1st embodiment of the present disclosure. FIG. 1B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the1st embodiment.

In FIG. 1A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 190. The image capturing optical system includes, inorder from an object side to an image side, a first lens element 110, anaperture stop 100, a second lens element 120, a third lens element 130,a fourth lens element 140, a fifth lens element 150, a prism 160 and animage surface 180, wherein the image capturing optical system has atotal of five lens elements (110-150) with refractive power, which arenon-cemented lens element.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being concave in a paraxial region thereof, whichare both aspheric, the first lens element 110 is made of plasticmaterial.

The second lens element 120 with negative refractive power has anobject-side surface 121 being concave in a paraxial region thereof andan image-side surface 122 being convex in a paraxial region thereof,which are both aspheric, the second lens element 120 is made of plasticmaterial, and the image-side surface 122 has at least one convex shapein an off-axis region thereof.

The third lens element 130 with positive refractive power has anobject-side surface 131 being concave in a paraxial region thereof andan image-side surface 132 being convex in a paraxial region thereof,which are both aspheric, and the third lens element 130 is made ofplastic material.

The fourth lens element 140 with negative refractive power has anobject-side surface 141 being convex in a paraxial region thereof and animage-side surface 142 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 140 is made of plasticmaterial.

The fifth lens element 150 with positive refractive power has anobject-side surface 151 being convex in a paraxial region thereof and animage-side surface 152 being concave in a paraxial region thereof, whichare both aspheric, the fifth lens element 150 is made of plasticmaterial and the object-side surface 151 having at least one convexshape in an off-axis region thereof.

The prism 160 is made of glass and located between the fifth lenselement 150 and the image surface 180, and will not affect the focallength of the image capturing optical system. The image sensor 190 isdisposed on or near the image surface 180 of the image capturing opticalsystem.

The equation of the aspheric surface profiles is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

In the first embodiment, a focal length of the image capturing opticalsystem is f, an f-number of the image capturing optical system is Fno,half of a maximal field of view of the image capturing optical system isHFOV, and these parameters have the following values: f=9.65 mm;Fno=1.56; and HFOV=13.2 degrees.

In the first embodiment, half of a maximal field of view of the imagecapturing optical system is HFOV, and it satisfies the condition:tan(HFOV)=0.23.

In the first embodiment, the maximum index among the indexes of thefirst lens element 110, the second lens element 120, the third lenselement 130, the fourth lens element 140 and the fifth lens element 150is Nmax, and it satisfies the condition: Nmax=1.650.

In the first embodiment, a central thickness of the first lens element110 is CT1, a central thickness of the second lens element 120 is CT2, acentral thickness of the third lens element 130 is CT3, and they satisfythe condition:

CT1/(CT2+CT3)=1.41.

In the first embodiment, an axial distance between the first lenselement 110 and the second lens element 120 is T12, an axial distancebetween the second lens element 120 and the third lens element 130 isT23, an axial distance between the third lens element 130 and the fourthlens element 140 is T34, an axial distance between the fourth lenselement 140 and the fifth lens element 150 is T45, and they satisfy thecondition: T12/(T23+T34+T45)=1.83.

In the first embodiment, a curvature radius of the object-side surface121 of the second lens element 120 is R3, a focal length of the secondlens element 120 is f2, and they satisfy the condition: R3/f2=0.30.

In the first embodiment, the focal length of the second lens element 120is f2, a focal length of the first lens element 110 is f1, and theysatisfy the condition: f2/f1=−0.85.

In the first embodiment, a focal length of the fourth lens element 140is f4, a curvature radius of the image-side surface 132 of the thirdlens element 130 is R6, and they satisfy the condition: f4/R6=1.52.

In the first embodiment, the focal length of the image capturing opticalsystem is f, the focal length of any one of the first lens element 110,the second lens element 120, the third lens element 130, the fourth lenselement 140 and the fifth lens element 150 is fx, that is, x is 1, 2, 3,4 or 5, and they satisfy the condition: Σ|f/fx|=8.23.

In the first embodiment, a curvature radius of the image surface 180 isRimg, and it satisfies the condition: Rimg=∞.

In the first embodiment, an effective radius of the object-side surface111 of the first lens element 110 is SD11, an effective radius of theimage-side surface 152 of the fifth lens element 150 is SD52, and theysatisfy the condition:

SD11/SD52=1.30.

The detailed optical data of the first embodiment is shown in TABLE 1,and the aspheric surface data is shown in TABLE 2, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 1 (Embodiment 1) f = 9.65 mm, Fno = 1.56, HFOV = 13.2 deg.Surface# Curvature Radius Thickness Material Index Abbe# Focal Length 0Object Plano Infinity 1 Lens 1 5.467 ASP 1.746 Plastic 1.544 55.9 14.212 16.567 ASP 0.051 3 Stop Plano 1.279 4 Lens 2 −3.648 ASP 0.500 Plastic1.650 21.5 −12.02 5 −7.210 ASP 0.456 6 Lens 3 −4.956 ASP 0.737 Plastic1.650 21.5 5.92 7 −2.294 ASP 0.125 8 Lens 4 4.820 ASP 1.201 Plastic1.650 21.5 −3.49 9 1.392 ASP 0.146 10 Lens 5 1.855 ASP 1.860 Plastic1.535 56.3 4.10 11 7.834 ASP 1.000 12 Prism Plano 4.000 Glass 2.003 28.3— 13 Plano 1.824 14 Image Plano — Surface Note: Reference Wavelength isd-line 587.6 nm

TABLE 2 Aspheric Coefficients Surface# 1 2 4 5 6 k = −2.8042E+00−4.7069E+01 −2.6572E+00 9.8435E−01 −3.5805E+00 A4 =  1.5304E−03 8.0598E−04  9.8554E−03 3.0832E−03 −1.9891E−02 A6 = −8.9542E−05−1.4511E−04 −2.4941E−03 −1.7015E−03   5.0880E−03 A8 = −6.7025E−06−2.6261E−05  3.3016E−04 1.7285E−04 −7.3257E−04 A10 = −3.0587E−07 1.9556E−07 −3.3256E−05 1.4625E−06  8.2342E−05 A12 = −2.7294E−08 6.3086E−08  2.0053E−06 −1.1317E−06  −5.6132E−06 A14 = −4.6175E−085.1055E−08  1.6014E−07 Surface# 7 8 9 10 11 k = −5.3871E+00 −1.0392E+00−3.3750E+00 −2.4268E+00 −4.8592E−01 A4 = −1.2811E−02  9.3585E−03 1.0305E−02 −1.1912E−02  3.8325E−03 A6 =  3.1927E−03 −2.0401E−03 4.4585E−03  1.5311E−02 −8.7642E−04 A8 = −2.8890E−04  1.4093E−04−2.4466E−03 −6.1542E−03  1.3984E−04 A10 =  7.6028E−06 −3.1965E−06 4.4169E−04  1.4040E−03  9.5682E−05 A12 =  1.5699E−06  1.9340E−07−2.4383E−05 −1.8755E−04 −4.8338E−05 A14 = −1.8680E−07 −3.8218E−08−1.8018E−06  1.4054E−05  9.1339E−06 A16 =  6.1799E−09  1.7674E−07−4.6920E−07 −5.9032E−07

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-16 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A16 represent the asphericcoefficients ranging from the 4th order to the 16th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the tables arethe same as Table 1 and Table 2 of the 1st embodiment. Therefore, anexplanation in this regard will not be provided again.

2nd Embodiment

FIG. 2A is a schematic view of an image capturing device according tothe 2nd embodiment of the present disclosure. FIG. 2B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the2nd embodiment.

In FIG. 2A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 290. The image capturing optical system includes, inorder from an object side to an image side, an aperture stop 200, afirst lens element 210, a second lens element 220, a third lens element230, a fourth lens element 240, a fifth lens element 250, an IR-cutfilter 270, and an image surface 280, wherein the image capturingoptical system has a total of five lens elements (210-250) withrefractive power, which are non-cemented lens element.

The first lens element 210 with positive refractive power has anobject-side surface 211 being convex in a paraxial region thereof and animage-side surface 212 being convex in a paraxial region thereof, whichare both aspheric, and the first lens element 210 is made of plasticmaterial.

The second lens element 220 with negative refractive power has anobject-side surface 221 being concave in a paraxial region thereof andan image-side surface 222 being concave in a paraxial region thereof,which are both aspheric, the second lens element 220 is made of plasticmaterial, and the image-side surface 222 has at least one convex shapein an off-axis region thereof.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being convex in a paraxial region thereof, whichare both aspheric, and the third lens element 230 is made of plasticmaterial.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 240 is made of plasticmaterial.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being concave in a paraxial region thereof,which are both aspheric, the fifth lens element 250 is made of plasticmaterial, and both of the object-side surface 251 and the image-sidesurface 252 have at least one convex shape in an off-axis regionthereof.

The IR-cut filter 270 is made of glass and located between the fifthlens element 250 and the image surface 280, and will not affect thefocal length of the image capturing optical system. The image sensor 290is disposed on or near the image surface 280 of the image capturingoptical system.

The detailed optical data of the second embodiment is shown in TABLE 3,and the aspheric surface data is shown in TABLE 4, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 3 (Embodiment 2) f = 8.88 mm, Fno = 2.00, HFOV = 14.0 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Stop Plano −0.530  2 Lens 1 4.549 ASP 2.583Plastic 1.544 55.9 6.05 3 −9.559 ASP 0.504 4 Lens 2 −2.484 ASP 0.500Plastic 1.639 23.5 −2.88 5 7.685 ASP 0.200 6 Lens 3 4.107 ASP 0.674Plastic 1.639 23.5 5.86 7 −39.659 ASP 0.185 8 Lens 4 2.303 ASP 0.708Plastic 1.544 55.9 8.27 9 4.208 ASP 0.391 10 Lens 5 −20.975 ASP 0.913Plastic 1.544 55.9 −22.04 11 28.436 ASP 1.549 12 IR-cut Plano 0.400Glass 1.517 64.2 — filter 13 Plano 2.541 14 Image −30.000000 — SurfaceNote: Reference wavelength is d-line 587.6 nm

TABLE 4 Aspheric Coefficients Surface# 2 3 4 5 6 k = −1.1584E+00−4.3570E+01 −8.9586E+00  2.5013E+00 1.1842E+00 A4 =  6.3572E−04 4.8378E−03  1.6859E−02 −2.1090E−02 −6.9882E−02  A6 = −4.4595E−05−3.1230E−03 −9.2693E−03  5.8186E−03 1.6939E−02 A8 = −3.2254E−05 6.8669E−04  4.2304E−03 −4.9787E−04 −2.0971E−03  A10 =  7.5913E−06−2.1563E−05 −1.2293E−03 −4.2278E−05 2.2031E−05 A12 = −1.0427E−06−1.7377E−05  2.1927E−04 −1.4353E−05 8.0748E−06 A14 =  4.6052E−08 2.0265E−06 −2.3958E−05  1.5481E−07 −1.5049E−06  A16 =  1.2843E−06 5.0453E−07 4.0675E−07 Surface# 7 8 9 10 11 k = −5.0000E+01 −6.1392E+00−1.5701E+01 −1.5378E+01 3.0000E+00 A4 = −2.7275E−02  6.5688E−03−1.1786E−03  9.1669E−03 2.0443E−02 A6 =  1.4484E−02  9.8039E−03 1.4359E−02  1.8322E−02 4.4605E−03 A8 = −5.1390E−03 −6.7248E−03−6.6193E−03 −9.0951E−03 −2.2675E−03  A10 =  1.4877E−03  2.2586E−03 3.0376E−03  3.8962E−03 5.8146E−04 A12 = −2.9738E−04 −5.3074E−04−1.0896E−03 −1.1432E−03 −4.3937E−05  A14 =  3.5128E−05  7.6999E−05 1.9747E−04  1.7691E−04 −3.8702E−06  A16 = −1.5322E−06 −4.6150E−06−1.3375E−05 −1.0977E−05 7.2252E−08

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2^(nd) Embodiment f [mm] 8.88 R3/f2 0.86 Fno 2.00 f2/f1 −0.48 HFOV[deg.] 14.0 f4/R6 −0.21 tan(HFOV) 0.25 Σ|f/fx| 7.54 Nmax 1.639 Rimg [mm]−30.00 CT1/(CT2 + CT3) 2.20 SD11/SD52 1.09 T12/(T23 + T34 + T45) 0.65

3rd Embodiment

FIG. 3A is a schematic view of an image capturing device according tothe 3rd embodiment of the present disclosure. FIG. 3B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the3rd embodiment.

In FIG. 3A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 390. The image capturing optical system includes, inorder from an object side to an image side, an aperture stop 300, afirst lens element 310, a second lens element 320, a third lens element330, a fourth lens element 340, a fifth lens element 350, an IR-cutfilter 370, and an image surface 380, wherein the image capturingoptical system has a total of five lens elements (310-350) withrefractive power, which are non-cemented lens element.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 310 is made of plasticmaterial.

The second lens element 320 with negative refractive power has anobject-side surface 321 being concave in a paraxial region thereof andan image-side surface 322 being concave in a paraxial region thereof,which are both aspheric, the second lens element 320 is made of plasticmaterial, and the image-side surface 322 having at least one convexshape in an off-axis region thereof.

The third lens element 330 with positive refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being concave in a paraxial region thereof, whichare both aspheric, and the third lens element 330 is made of plasticmaterial.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 340 is made of plasticmaterial.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being concave in a paraxial region thereof andan image-side surface 352 being concave in a paraxial region thereof,which are both aspheric, the fifth lens element 350 is made of plasticmaterial, and both of the object-side surface 351 and the image-sidesurface 352 have at least one convex shape in an off-axis regionthereof.

The IR-cut filter 370 is made of glass and located between the fifthlens element 350 and the image surface 380, and will not affect thefocal length of the image capturing optical system. The image sensor 390is disposed on or near the image surface 380 of the image capturingoptical system.

The detailed optical data of the third embodiment is shown in TABLE 5,and the aspheric surface data is shown in TABLE 6, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 5 (Embodiment 3) f = 8.55 mm, Fno = 1.65, HFOV = 18.0 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Stop Plano −0.552  2 Lens 1 5.069 ASP 3.000Plastic 1.544 55.9 5.28 3 −5.246 ASP 0.400 4 Lens 2 −2.152 ASP 0.500Plastic 1.607 26.6 −2.25 5 4.091 ASP 0.200 6 Lens 3 4.631 ASP 0.613Plastic 1.650 21.4 7.52 7 83.211 ASP 0.156 8 Lens 4 1.971 ASP 1.513Plastic 1.544 55.9 3.67 9 118.721 ASP 0.347 10 Lens 5 −4.600 ASP 0.814Plastic 1.544 55.9 −7.33 11 31.924 ASP 0.703 12 IR-cut Plano 0.300 Glass1.517 64.2 — filter 13 Plano 2.847 14 Image Plano — Surface Note:Reference wavelength is d-line 587.6 nm

TABLE 6 Aspheric Coefficients Surface# 2 3 4 5 6 k = −1.3585E+00−2.7767E+01 −4.8579E+00 −3.3016E+01 −7.7355E−01 A4 =  1.4218E−04−7.2498E−04  1.3121E−02 −2.6116E−02 −5.2539E−02 A6 = −1.6306E−04−2.2655E−03 −7.1197E−03  5.6094E−03  9.8318E−03 A8 = −1.8191E−05 3.1377E−04  2.3747E−03 −4.9389E−04 −1.0851E−03 A10 =  2.0653E−06−2.0134E−06 −5.1470E−04 −2.5719E−05  1.1517E−05 A12 = −4.3682E−07−2.6454E−06  7.2456E−05  1.2238E−06  5.3802E−06 A14 =  8.8272E−09 1.5190E−07 −5.8702E−06  7.8554E−07  4.4894E−07 A16 =  2.0401E−07−5.0865E−08 −6.0659E−08 Surface# 7 8 9 10 11 k = −5.0000E+01 −4.6890E+00−2.0000E+01 −9.1180E+00 −2.0000E+01 A4 = −2.1894E−02  7.2604E−03 5.6113E−03  9.2445E−03  2.0017E−02 A6 =  7.6650E−03  2.8813E−03 4.4644E−03  5.9422E−03 −1.3504E−03 A8 = −2.7259E−03 −2.6818E−03−2.6350E−03 −3.9193E−03 −3.5177E−04 A10 =  6.7769E−04  9.3204E−04 1.2824E−03  1.6956E−03  6.5017E−05 A12 = −1.0210E−04 −1.9913E−04−3.7993E−04 −4.1985E−04  5.1341E−06 A14 =  8.7551E−06  2.2273E−05 5.3812E−05  5.2563E−05 −2.1823E−06 A16 = −3.1472E−07 −9.6382E−07−2.8329E−06 −2.5861E−06  1.4170E−07

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3^(rd) Embodiment f [mm] 8.55 R3/f2 0.96 Fno 1.65 f2/f1 −0.43 HFOV[deg.] 18.0 f4/R6 0.04 tan(HFOV) 0.32 Σ|f/fx| 10.05 Nmax 1.650 Rimg [mm]∞ CT1/(CT2 + CT3) 2.70 SD11/SD52 1.05 T12/(T23 + T34 + T45) 0.57

4th Embodiment

FIG. 4A is a schematic view of an image capturing device according tothe 4th embodiment of the present disclosure. FIG. 4B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the4th embodiment.

In FIG. 4A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 490. The image capturing optical system includes, inorder from an object side to an image side, a first lens element 410, anaperture stop 400, a second lens element 420, a third lens element 430,a fourth lens element 440, a fifth lens element 450, a prism 460, and animage surface 480, wherein the image capturing optical system has atotal of five lens elements (410-450) with refractive power, which arenon-cemented lens element.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 410 is made of plasticmaterial.

The second lens element 420 with negative refractive power has anobject-side surface 421 being concave in a paraxial region thereof andan image-side surface 422 being concave in a paraxial region thereof,which are both aspheric, the second lens element 420 is made of plasticmaterial, and the image-side surface 422 having at least one convexshape in an off-axis region thereof.

The third lens element 430 with positive refractive power has anobject-side surface 431 being convex in a paraxial region thereof and animage-side surface 432 being convex in a paraxial region thereof, whichare both aspheric, and the third lens element 430 is made of plasticmaterial.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being convex in a paraxial region thereof and animage-side surface 442 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 440 is made of plasticmaterial.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being concave in a paraxial region thereof,which are both aspheric, the fifth lens element 450 is made of plasticmaterial, and the object-side surface 451 having at least one convexshape in an off-axis region thereof.

The prism 460 is made of glass and located between the fifth lenselement 450 and the image surface 480, and will not affect the focallength of the image capturing optical system. The image sensor 490 isdisposed on or near the image surface 480 of the image capturing opticalsystem.

The detailed optical data of the fourth embodiment is shown in TABLE 7,and the aspheric surface data is shown in TABLE 8, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 7 (Embodiment 4) f = 10.11 mm, Fno = 1.95, HFOV = 12.5 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Lens 1 4.385 ASP 2.361 Plastic 1.544 55.9 6.63 2−16.427 ASP 0.543 3 Stop Plano 0.561 4 Lens 2 −2.174 ASP 0.600 Plastic1.639 23.5 −2.26 5 4.789 ASP 0.105 6 Lens 3 3.265 ASP 0.738 Plastic1.639 23.5 4.26 7 −14.998 ASP 0.050 8 Lens 4 2.596 ASP 1.034 Plastic1.544 55.9 5.22 9 25.969 ASP 0.194 10 Lens 5 −8.170 ASP 0.615 Plastic1.544 55.9 −7.75 11 8.955 ASP 0.500 12 Prism Plano 5.500 Glass 1.51764.2 — 13 Plano 0.628 14 Image Plano — Surface Note: Referencewavelength is d-line 587.6 nm

TABLE 8 Aspheric Coefficients Surface# 1 2 4 5 6 k = −6.0042E−011.8670E+01 −7.9811E+00 −1.2564E+00 −4.4191E+00 A4 =  5.9943E−046.4884E−03  1.7403E−02 −4.3331E−02 −8.7347E−02 A6 = −5.3523E−05−1.4506E−03  −1.1231E−02  4.9297E−03  1.7841E−02 A8 =  1.3462E−051.1847E−04  4.6601E−03 −3.3297E−04 −1.3101E−03 A10 = −7.6268E−06−1.3374E−06  −1.2573E−03 A12 =  1.0837E−06 −1.4656E−06   2.0449E−04 A14= −7.4673E−08 1.1476E−07 −1.8262E−05 A16 =  6.7279E−07 Surface# 7 8 9 1011 k = −1.2390E+01 −1.0948E+01  2.0000E+01  5.8004E+00 −9.0000E+01  A4 =−3.7665E−02  1.4321E−02 −1.5038E−02 −5.6296E−03 2.0031E−02 A6 = 1.9182E−02  4.2552E−03  1.1480E−02  1.6189E−02 −4.7042E−03  A8 =−6.2046E−03 −5.3919E−03 −5.5390E−03 −9.0573E−03 2.8878E−04 A10 = 1.6589E−03  2.1673E−03  3.1606E−03  4.2098E−03 1.2103E−04 A12 =−2.7381E−04 −5.5995E−04 −1.1206E−03 −1.1645E−03 −2.4192E−05  A14 = 2.4736E−05  7.8974E−05  1.8783E−04  1.6479E−04 1.3037E−06 A16 =−9.6266E−07 −4.3616E−06 −1.1723E−05 −9.2173E−06

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4^(th) Embodiment f [mm] 10.11 R3/f2 0.96 Fno 1.95 f2/f1 −0.34 HFOV[deg.] 12.5 f4/R6 −0.35 tan(HFOV) 0.22 Σ|f/fx| 11.61 Nmax 1.639 Rimg[mm] ∞ CT1/(CT2 + CT3) 1.76 SD11/SD52 1.46 T12/(T23 + T34 + T45) 3.16

5th Embodiment

FIG. 5A is a schematic view of an image capturing device according tothe 5th embodiment of the present disclosure. FIG. 5B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the5th embodiment.

In FIG. 5A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 590. The image capturing optical system includes, inorder from an object side to an image side, a first lens element 510, anaperture stop 500, a second lens element 520, a third lens element 530,a fourth lens element 540, a fifth lens element 550, a prism 560 and animage surface 580, wherein the image capturing optical system has atotal of five lens elements (510-550) with refractive power, which arenon-cemented lens element.

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 510 is made of plasticmaterial.

The second lens element 520 with negative refractive power has anobject-side surface 521 being concave in a paraxial region thereof andan image-side surface 522 being concave in a paraxial region thereof,which are both aspheric, and the second lens element 520 is made ofplastic material.

The third lens element 530 with positive refractive power has anobject-side surface 531 being convex in a paraxial region thereof and animage-side surface 532 being convex in a paraxial region thereof, whichare both aspheric, and the third lens element 530 is made of plasticmaterial.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex in a paraxial region thereof and animage-side surface 542 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 540 is made of plasticmaterial.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being concave in a paraxial region thereof andan image-side surface 552 being concave in a paraxial region thereof,which are both aspheric, the fifth lens element 550 is made of plasticmaterial and the object-side surface 551 has at least one convex shapein an off-axis region thereof.

The prism 560 is made of glass and located between the fifth lenselement 550 and the image surface 580, and will not affect the focallength of the image capturing optical system. The image sensor 590 isdisposed on or near the image surface 580 of the image capturing opticalsystem.

The detailed optical data of the fifth embodiment is shown in TABLE 9,and the aspheric surface data is shown in TABLE 10, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 9 (Embodiment 5) f = 10.11 mm, Fno = 1.95, HFOV = 12.5 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Lens 1 4.403 ASP 2.010 Plastic 1.544 55.9 6.72 2−18.125 ASP 0.688 3 Stop Plano 0.608 4 Lens 2 −2.683 ASP 0.600 Plastic1.639 23.5 −2.51 5 4.317 ASP 0.119 6 Lens 3 4.501 ASP 0.972 Plastic1.639 23.5 4.93 7 −9.629 ASP 0.050 8 Lens 4 2.458 ASP 0.954 Plastic1.544 55.9 6.23 9 7.725 ASP 0.191 10 Lens 5 −18.713 ASP 0.600 Plastic1.544 55.9 −10.52 11 8.345 ASP 0.600 12 Prism Plano 5.500 Glass 1.51764.2 — 13 Plano 0.558 14 Image Plano — Surface Note: Referencewavelength is d-line 587.6 nm

TABLE 10 Aspheric Coefficients Surface# 1 2 4 5 6 k = −4.0010E−01−2.2709E+01 −1.0153E+01 −1.4923E+01 −2.3792E+01 A4 =  5.9032E−04 5.3970E−03  7.6756E−03 −1.3155E−02 A6 = −1.0997E−05 −9.1966E−04−2.5417E−03  4.2092E−03 A8 =  5.0880E−06  3.9966E−05  3.8181E−04−3.7879E−04 A10 = −5.3589E−06 −1.7378E−06 −1.8343E−05 A12 =  7.0585E−07A14 = −4.9449E−08 Surface# 7 8 9 10 11 k = −1.9754E+01 −8.7679E+00−2.5646E+01 1.7181E+01 −9.0000E+01 A4 = −1.8128E−02  1.7898E−02−3.3818E−02 −1.9406E−02   2.3902E−02 A6 =  2.1147E−02 −3.7957E−03 1.5644E−02 1.9164E−02 −6.7561E−03 A8 = −1.2841E−02  4.6431E−05 2.3431E−03 −4.3974E−03   8.8262E−04 A10 =  4.9611E−03 −3.3413E−032.0059E−04 −2.9192E−05 A12 = −1.1341E−03  9.7993E−04 7.1580E−05 A14 = 1.4228E−04 −1.2917E−04 −7.2791E−06  A16 = −7.6095E−06  6.8586E−06

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

Embodiment 5 f [mm] 10.11 R3/f2 1.07 Fno 1.95 f2/f1 −0.37 HFOV [deg.]12.5 f4/R6 −0.65 tan(HFOV) 0.22 Σ|f/fx| 10.17 Nmax 1.639 Rimg [mm] ∞CT1/(CT2 + CT3) 1.28 SD11/SD52 1.43 T12/(T23 + T34 + T45) 3.60

6th Embodiment

FIG. 6A is a schematic view of an image capturing device according tothe 6th embodiment of the present disclosure. FIG. 6B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the6th embodiment.

In FIG. 6A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 690. The image capturing optical system includes, inorder from an object side to an image side, a first lens element 610, anaperture stop 600, a second lens element 620, a third lens element 630,a fourth lens element 640, a fifth lens element 650, a prism 660 and animage surface 680, wherein the image capturing optical system has atotal of five lens elements (610-650) with refractive power, which arenon-cemented lens element.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex in a paraxial region thereof and animage-side surface 612 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 610 is made of plasticmaterial.

The second lens element 620 with negative refractive power has anobject-side surface 621 being concave in a paraxial region thereof andan image-side surface 622 being concave in a paraxial region thereof,which are both aspheric, the second lens element 620 is made of plasticmaterial, and the image-side surface 622 has at least one convex shapein an off-axis region thereof.

The third lens element 630 with positive refractive power has anobject-side surface 631 being concave in a paraxial region thereof andan image-side surface 632 being convex in a paraxial region thereof,which are both aspheric, and the third lens element 630 is made ofplastic material.

The fourth lens element 640 with negative refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 640 is made of plasticmaterial.

The fifth lens element 650 with positive refractive power has anobject-side surface 651 being convex in a paraxial region thereof and animage-side surface 652 being concave in a paraxial region thereof, whichare both aspheric, the fifth lens element 650 is made of plasticmaterial, and both of the object-side surface 651 and the image-sidesurface 625 have at least one convex shape in an off-axis regionthereof.

The prism 660 is made of glass and located between the fifth lenselement 650 and the image surface 680, and will not affect the focallength of the image capturing optical system. The image sensor 690 isdisposed on or near the image surface 680 of the image capturing opticalsystem.

The detailed optical data of the sixth embodiment is shown in TABLE 11,and the aspheric surface data is shown in TABLE 12, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 11 (Embodiment 6) f = 10.33 mm, Fno = 1.38, HFOV = 12.5 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Lens 1 5.597 ASP 2.677 Plastic 1.544 55.9 8.64 2−24.409 ASP 0.414 3 Stop Plano 0.703 4 Lens 2 −3.469 ASP 0.700 Plastic1.639 23.5 −4.61 5 21.163 ASP 0.400 6 Lens 3 −32.819 ASP 1.016 Plastic1.639 23.5 9.01 7 −4.956 ASP 0.050 8 Lens 4 3.102 ASP 1.207 Plastic1.639 23.5 −13.98 9 1.953 ASP 0.208 10 Lens 5 2.668 ASP 1.564 Plastic1.544 55.9 6.63 11 8.145 ASP 0.650 12 Prism Plano 5.500 Glass 1.517 64.2— 13 Plano 0.570 14 Image Plano — Surface Note: Reference wavelength isd-line 587.6 nm

TABLE 12 Aspheric Coefficients Surface# 1 2 4 5 6 k = −1.6983E−01 1.8242E+01 −8.1099E+00 1.9319E+01 1.7897E+01 A4 =  3.4920E−05 4.7287E−03  1.0749E−02 −5.8800E−03  −2.7463E−02  A6 =  3.2729E−05−1.6952E−04 −1.4177E−03 2.9835E−03 8.3192E−03 A8 = −9.0979E−06−3.7961E−05 −3.9336E−05 −7.9681E−04  −1.2348E−03  A10 =  6.2626E−07 3.0663E−06  1.9132E−05 9.2219E−05 1.0470E−04 A12 = −3.0411E−08−7.2076E−08 −1.3255E−06 −4.7220E−06  −4.6266E−06  A14 =  3.0122E−088.7015E−08 8.3084E−08 Surface# 7 8 9 10 11 k = −8.5776E+00 −2.2888E+00−3.2392E+00 −7.7028E+00 −9.0000E+01 A4 = −9.5772E−03  1.9796E−03 2.9846E−02  4.5261E−02  1.7303E−02 A6 =  3.0089E−03 −1.8896E−03−1.9276E−02 −2.3257E−02 −8.5626E−03 A8 = −4.9321E−04  5.4036E−04 6.7816E−03  6.9084E−03  2.5589E−03 A10 =  6.8686E−05 −9.6698E−05−1.4732E−03 −1.2935E−03 −5.0238E−04 A12 = −6.8182E−06  7.6031E−06 1.8905E−04  1.5095E−04  6.3036E−05 A14 =  3.6689E−07 −2.1938E−07−1.3081E−05 −9.7778E−06 −4.3358E−06 A16 = −7.6112E−09  3.7339E−07 2.6072E−07  1.1807E−07

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6^(th) Embodiment f [mm] 10.33 R3/f2 0.75 Fno 1.38 f2/f1 −0.53 HFOV[deg.] 12.5 f4/R6 2.82 tan(HFOV) 0.22 Σ|f/fx| 6.88 Nmax 1.639 Rimg [mm]∞ CT1/(CT2 + CT3) 1.56 SD11/SD52 1.42 T12/(T23 + T34 + T45) 1.70

7th Embodiment

FIG. 7A is a schematic view of an image capturing device according tothe 7th embodiment of the present disclosure. FIG. 7B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the7th embodiment.

In FIG. 7A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 790. The image capturing optical system includes, inorder from an object side to an image side, a first lens element 710, anaperture stop 700, a second lens element 720, a third lens element 730,a fourth lens element 740, a fifth lens element 750, a prism 760 and animage surface 780, wherein the image capturing optical system has atotal of five lens elements (710-750) with refractive power, which arenon-cemented lens element.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 710 is made of plasticmaterial.

The second lens element 720 with negative refractive power has anobject-side surface 721 being concave in a paraxial region thereof andan image-side surface 722 being concave in a paraxial region thereof,which are both aspheric, the second lens element 720 is made of plasticmaterial, and the image-side surface 722 has at least one convex shapein an off-axis region thereof.

The third lens element 730 with positive refractive power has anobject-side surface 731 being concave in a paraxial region thereof andan image-side surface 732 being convex in a paraxial region thereof,which are both aspheric, and the third lens element 730 is made ofplastic material.

The fourth lens element 740 with negative refractive power has anobject-side surface 741 being convex in a paraxial region thereof and animage-side surface 742 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 740 is made of plasticmaterial.

The fifth lens element 750 with positive refractive power has anobject-side surface 751 being convex in a paraxial region thereof and animage-side surface 752 being concave in a paraxial region thereof, whichare both aspheric, the fifth lens element 750 is made of plasticmaterial, and the object-side surface 751 has at least one convex shapein an off-axis region thereof.

The prism 760 is made of glass and located between the fifth lenselement 750 and the image surface 780, and will not affect the focallength of the image capturing optical system. The image sensor 790 isdisposed on or near the image surface 780 of the image capturing opticalsystem.

The detailed optical data of the seventh embodiment is shown in TABLE13, and the aspheric surface data is shown in TABLE 14, wherein theunits of the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is half of the maximal field of view.

TABLE 13 (Embodiment 7) f = 10.29 mm, Fno = 1.40, HFOV = 12.5 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Lens 1 5.848 ASP 2.308 Plastic 1.544 55.9 10.272 −108.886 ASP 0.323 3 Stop Plano 0.766 4 Lens 2 −3.968 ASP 0.700Plastic 1.639 23.5 −5.58 5 37.421 ASP 0.407 6 Lens 3 −39.068 ASP 1.248Plastic 1.639 23.5 5.94 7 −3.501 ASP 0.050 8 Lens 4 4.258 ASP 1.328Plastic 1.639 23.5 −4.97 9 1.597 ASP 0.239 10 Lens 5 2.211 ASP 2.069Plastic 1.544 55.9 4.86 11 9.024 ASP 0.600 12 Prism Plano 5.500 Glass1.517 64.2 — 13 Plano 0.651 14 Image Plano — Surface Note: Referencewavelength is d-line 587.6 nm

TABLE 14 Aspheric Coefficients Surface# 1 2 4 5 6 k = −1.0328E−012.0000E+01 −6.4516E+00 1.8282E+01 1.6962E+01 A4 =  3.3169E−05 2.7671E−03 7.1187E−03 −6.9851E−03  −2.2437E−02  A6 =  4.0545E−05 3.1316E−05−5.0689E−04 2.9269E−03 6.2069E−03 A8 = −1.0660E−05 −3.7921E−05 −1.0253E−04 −6.2642E−04  −8.8897E−04  A10 =  7.7811E−07 2.2008E−06 1.7910E−05 6.7565E−05 7.7464E−05 A12 = −3.3921E−08 −4.2425E−08 −1.0214E−06 −3.5915E−06  −3.7908E−06  A14 =  2.0897E−08 7.5500E−087.8457E−08 Surface# 7 8 9 10 11 k = −8.8989E+00 −7.9360E−01 −3.1213E+00−3.8534E+00 −9.0000E+01 A4 = −4.1634E−03  4.5553E−03  3.0423E−03 6.0916E−03  1.3752E−02 A6 =  1.0557E−03 −8.1211E−04  4.5634E−03 9.7002E−04 −5.6205E−03 A8 = −1.4940E−04 −3.0907E−05 −1.6516E−03−1.1900E−04  1.7705E−03 A10 =  1.8390E−05  1.1467E−05  2.3059E−04−1.0488E−04 −3.9486E−04 A12 = −1.5597E−06 −1.0112E−06 −1.2566E−05 2.9858E−05  5.5781E−05 A14 =  6.8817E−08  3.0767E−08 −1.7831E−07−3.0469E−06 −4.3451E−06 A16 = −1.1667E−09  3.1277E−08  1.1106E−07 1.4108E−07

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7^(th) Embodiment f [mm] 10.29 R3/f2 0.71 Fno 1.40 f2/f1 −0.54 HFOV[deg.] 12.5 f4/R6 1.42 tan(HFOV) 0.22 Σ|f/fx| 8.77 Nmax 1.639 Rimg [mm]∞ CT1/(CT2 + CT3) 1.18 SD11/SD52 1.38 T12/(T23 + T34 + T45) 1.56

8th Embodiment

FIG. 8A is a schematic view of an image capturing device according tothe 8th embodiment of the present disclosure. FIG. 8B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the8th embodiment. In FIG. 8A, the image capturing device includes theimage capturing optical system (not otherwise herein labeled) of thepresent disclosure and an image sensor 890. The image capturing opticalsystem includes, in order from an object side to an image side, anaperture stop 800, a first lens element 810, a second lens element 820,a third lens element 830, a fourth lens element 840, a fifth lenselement 850, an IR-cut filter 870, and an image surface 880, wherein theimage capturing optical system has a total of five lens elements(810-850) with refractive power, which are non-cemented lens element.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being convex in a paraxial region thereof, whichare both aspheric, the first lens element 810 is made of glass.

The second lens element 820 with negative refractive power has anobject-side surface 821 being concave in a paraxial region thereof andan image-side surface 822 being concave in a paraxial region thereof,which are both aspheric, the second lens element 820 is made of plasticmaterial, and the image-side surface 822 has at least one convex shapein an off-axis region thereof.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex in a paraxial region thereof and animage-side surface 832 being concave in a paraxial region thereof, whichare both aspheric, and the third lens element 830 is made of plasticmaterial.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being convex in a paraxial region thereof and animage-side surface 842 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 840 is made of plasticmaterial.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being convex in a paraxial region thereof and animage-side surface 852 being concave in a paraxial region thereof, whichare both aspheric, the fifth lens element 850 is made of plasticmaterial, and both of the object-side surface 851 and the image-sidesurface 852 have at least one convex shape in an off-axis regionthereof.

The IR-cut filter 870 is made of glass and located between the fifthlens element 850 and the image surface 880, and will not affect thefocal length of the image capturing optical system. The image sensor 890is disposed on or near the image surface 880 of the image capturingoptical system.

The detailed optical data of the eighth embodiment is shown in TABLE 15,and the aspheric surface data is shown in TABLE 16, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 15 (Embodiment 8) f = 7.22 mm, Fno = 1.72, HFOV = 21.0 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Stop Plano 0.029 2 Lens 1 4.493 ASP 2.013 Glass1.542 62.9 6.98 3 −20.230 ASP 0.488 4 Lens 2 −2.882 ASP 0.350 Plastic1.633 23.4 −3.21 5 7.207 ASP 0.266 6 Lens 3 2.474 ASP 0.470 Plastic1.633 23.4 7.05 7 5.143 ASP 0.100 8 Lens 4 2.355 ASP 1.717 Plastic 1.54455.9 5.45 9 8.498 ASP 0.902 10 Lens 5 2.841 ASP 0.450 Plastic 1.530 55.8−12.53 11 1.881 ASP 1.300 12 IR-cut Plano 0.300 Glass 1.517 64.2 —filter 13 Plano 0.980 14 Image Plano — Surface Note: Referencewavelength is d-line 587.6 nm

TABLE 16 Aspheric Coefficients Surface# 2 3 4 5 6 k = −1.5623E+00−5.0000E+01  −9.9074E+00 −5.0000E+01 −6.2393E−01 A4 = −7.7674E−042.3984E−03 −1.1075E−03 −3.4368E−02 −5.2452E−02 A6 = −5.3943E−04−5.4201E−03  −8.2465E−03  5.1342E−03  8.8352E−03 A8 =  8.7492E−054.7260E−04  2.6725E−03 −6.0650E−04 −1.2967E−03 A10 = −7.3206E−053.1413E−05 −5.4290E−04  9.6271E−06  3.2135E−05 A12 =  1.6833E−05−5.7110E−06   6.9822E−05  5.1140E−06  1.0360E−05 A14 = −1.6919E−068.1852E−08 −4.3520E−06  3.7827E−08  1.3164E−06 A16 =  9.0134E−08−3.2457E−08 −2.3721E−07 Surface# 7 8 9 10 11 k =  0.0000E+00 −6.9610E+00−1.9061E+01 −1.1974E+01 −4.7950E+00 A4 = −1.5838E−02  1.6857E−02−3.0451E−04 −5.5201E−02 −4.6313E−02 A6 =  5.9195E−03  3.1510E−03 9.1536E−03 −5.3646E−03  4.7433E−03 A8 = −2.6842E−03 −3.2384E−03−4.8569E−03  7.8388E−03  2.6306E−03 A10 =  6.9903E−04  1.0449E−03 1.2483E−03 −2.8190E−03 −1.5281E−03 A12 = −9.7991E−05 −1.8259E−04−1.8688E−04  3.1394E−04  3.5580E−04 A14 =  8.8325E−06  1.8511E−05 1.2072E−05  2.8123E−05 −3.9329E−05 A16 = −4.4819E−07 −8.1896E−07 6.2260E−07 −5.7300E−06  1.6731E−06

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8^(th) Embodiment f [mm] 7.22 R3/f2 0.90 Fno 1.72 f2/f1 −0.46 HFOV[deg.] 21.0 f4/R6 1.06 tan(HFOV) 0.38 Σ|f/fx| 6.21 Nmax 1.633 Rimg [mm]∞ CT1/(CT2 + CT3) 2.45 SD11/SD52 0.89 T12/(T23 + T34 + T45) 0.38

9th Embodiment

FIG. 9A is a schematic view of an image capturing device according tothe 9th embodiment of the present disclosure. FIG. 9B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the9th embodiment.

In FIG. 9A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 990. The image capturing optical system includes, inorder from an object side to an image side, an aperture stop 900, afirst lens element 910, a second lens element 920, a third lens element930, a fourth lens element 940, a fifth lens element 950, an IR-cutfilter 970 and an image surface 980, wherein the image capturing opticalsystem has a total of five lens elements (910-950) with refractivepower, which are non-cemented lens element.

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being concave in a paraxial region thereof, whichare both aspheric, the first lens element 910 is made of plasticmaterial.

The second lens element 920 with negative refractive power has anobject-side surface 921 being concave in a paraxial region thereof andan image-side surface 922 being concave in a paraxial region thereof,which are both aspheric, the second lens element 920 is made of plasticmaterial, and the image-side surface 922 has at least one convex shapein an off-axis region thereof.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex in a paraxial region thereof and animage-side surface 932 being concave in a paraxial region thereof, whichare both aspheric, and the third lens element 930 is made of plasticmaterial.

The fourth lens element 940 with positive refractive power has anobject-side surface 941 being convex in a paraxial region thereof and animage-side surface 942 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 940 is made of plasticmaterial.

The fifth lens element 950 with positive refractive power has anobject-side surface 951 being convex in a paraxial region thereof and animage-side surface 952 being concave in a paraxial region thereof, whichare both aspheric, the fifth lens element 950 is made of plasticmaterial, and both of the object-side surface 951 and the image-sidesurface 952 have at least one convex shape in an off-axis regionthereof.

The IR-cut filter 970 is made of glass and located between the fifthlens element 950 and the image surface 980, and will not affect thefocal length of the image capturing optical system. The image sensor 990is disposed on or near the image surface 980 of the image capturingoptical system.

The detailed optical data of the ninth embodiment is shown in TABLE 17,and the aspheric surface data is shown in TABLE 18, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 17 (Embodiment 9) f = 7.81 mm, Fno = 1.83, HFOV = 19.7 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Stop Plano −0.369  2 Lens 1 4.256 ASP 0.980Plastic 1.544 55.9 12.42 3 10.566 ASP 1.015 4 Lens 2 −27.721 ASP 0.500Plastic 1.633 23.4 −8.61 5 6.825 ASP 0.386 6 Lens 3 2.590 ASP 1.123Plastic 1.544 55.9 22.39 7 2.787 ASP 0.482 8 Lens 4 2.664 ASP 1.680Plastic 1.544 55.9 8.39 9 4.971 ASP 0.485 10 Lens 5 2.184 ASP 0.909Plastic 1.530 55.8 92.26 11 1.957 ASP 1.500 12 IR-cut Plano 0.300 Glass1.517 64.2 — filter 13 Plano 0.958 14 Image Plano — Surface Note:Reference wavelength is d-line 587.6 nm

TABLE 18 Aspheric Coefficients Surface# 2 3 4 5 6 k = −1.7257E+00−1.4703E+01 −5.0000E+01 2.9909E+00 −2.7790E−01 A4 = −9.0723E−04−8.7041E−03 −1.7874E−02 −2.5164E−02  −2.3770E−02 A6 = −7.1174E−04−1.7050E−03 −2.5207E−03 1.9995E−03  3.9031E−03 A8 =  5.7658E−05 3.6757E−04  1.6376E−03 −4.5654E−05  −1.2303E−03 A10 = −4.6530E−05−8.4903E−05 −3.6875E−04 1.0978E−05  1.5859E−04 A12 =  7.5583E−06 1.1860E−05  6.9560E−05 5.1926E−06 −1.7682E−06 A14 = −9.0739E−07−8.5881E−07 −8.0356E−06 −9.3665E−07  −7.4364E−07 A16 =  3.6294E−077.3674E−09  1.2945E−08 Surface# 7 8 9 10 11 k =  0.0000E+00 −1.8980E+00−2.0000E+01 −6.7345E+00 −3.5550E+00 A4 = −3.2411E−02 −1.9548E−03−1.4866E−02 −2.1419E−02 −2.5780E−02 A6 =  5.0197E−03  4.0671E−03 2.1752E−02 −1.4158E−02 −1.4664E−03 A8 = −2.6624E−03 −2.4874E−03−7.7154E−03  1.2313E−02  3.5233E−03 A10 =  6.6021E−04  7.9789E−04 1.6639E−03 −4.9403E−03 −1.3981E−03 A12 = −9.4952E−05 −1.8240E−04−2.0773E−04  1.1618E−03  2.8974E−04 A14 =  8.9509E−06  2.4274E−05 9.5262E−06 −1.4813E−04 −3.1958E−05 A16 = −4.4528E−07 −1.3720E−06 8.4835E−08  7.7003E−06  1.4702E−06

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9^(th) Embodiment f [mm] 7.81 R3/f2 3.22 Fno 1.83 f2/f1 −0.69 HFOV[deg.] 19.7 f4/R6 3.01 tan(HFOV) 0.36 Σ|f/fx| 2.90 Nmax 1.633 Rimg [mm]∞ CT1/(CT2 + CT3) 0.60 SD11/SD52 0.88 T12/(T23 + T34 + T45) 0.75

10th Embodiment

FIG. 10A is a schematic view of an image capturing device according tothe 10th embodiment of the present disclosure. FIG. 10B shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing device according to the10th embodiment.

In FIG. 10A, the image capturing device includes the image capturingoptical system (not otherwise herein labeled) of the present disclosureand an image sensor 1090. The image capturing optical system includes,in order from an object side to an image side, an aperture stop 1000, afirst lens element 1010, a second lens element 1020, a third lenselement 1030, a fourth lens element 1040, a fifth lens element 1050, anIR-cut filter 1070, and an image surface 1080, wherein the imagecapturing optical system has a total of five lens elements (1010-1050)with refractive power, which are non-cemented lens element.

The first lens element 1010 with positive refractive power has anobject-side surface 1011 being convex in a paraxial region thereof andan image-side surface 1012 being convex in a paraxial region thereof,which are both aspheric, the first lens element 1010 is made of plasticmaterial.

The second lens element 1020 with negative refractive power has anobject-side surface 1021 being concave in a paraxial region thereof andan image-side surface 1022 being convex in a paraxial region thereof,which are both aspheric, the second lens element 1020 is made of plasticmaterial, and the image-side surface 1022 has at least one convex shapein an off-axis region thereof.

The third lens element 1030 with positive refractive power has anobject-side surface 1031 being concave in a paraxial region thereof andan image-side surface 1032 being convex in a paraxial region thereof,which are both aspheric, and the third lens element 1030 is made ofplastic material.

The fourth lens element 1040 with negative refractive power has anobject-side surface 1041 being convex in a paraxial region thereof andan image-side surface 1042 being concave in a paraxial region thereof,which are both aspheric, and the fourth lens element 1040 is made ofplastic material.

The fifth lens element 1050 with positive refractive power has anobject-side surface 1051 being convex in a paraxial region thereof andan image-side surface 1052 being concave in a paraxial region thereof,which are both aspheric, the fifth lens element 1050 is made of plasticmaterial, and the object-side surface 1051 has at least one convex shapein an off-axis region thereof.

The IR-cut filter 1070 is made of glass and located between the fifthlens element 1050 and the image surface 1080, and will not affect thefocal length of the image capturing optical system. The image sensor1090 is disposed on or near the image surface 1080 of the imagecapturing optical system.

The detailed optical data of the tenth embodiment is shown in TABLE 19,and the aspheric surface data is shown in TABLE 20, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is half of the maximal field of view.

TABLE 19 (Embodiment 10) f = 8.36 mm, Fno = 1.25, HFOV = 14.7 deg.Surface# Curvature Radius Thickness Material Index Abbe # Focal Length 0Object Plano Infinity 1 Stop Plano −1.032  2 Lens 1 5.140 ASP 2.495Plastic 1.544 55.9 7.11 3 −13.006 ASP 0.675 4 Lens 2 −3.453 ASP 0.500Plastic 1.639 23.5 −6.01 5 −35.979 ASP 0.602 6 Lens 3 −2.969 ASP 0.877Plastic 1.570 40.0 16.09 7 −2.483 ASP 0.100 8 Lens 4 2.755 ASP 1.145Plastic 1.639 23.5 −15.32 9 1.802 ASP 0.141 10 Lens 5 2.827 ASP 2.706Plastic 1.544 55.9 6.58 11 8.911 ASP 1.800 12 IR-cut Plano 0.300 Glass1.517 64.2 — filter 13 Plano 1.035 14 Image Plano — Surface Note:Reference wavelength is d-line 587.6 nm

TABLE 20 Aspheric Coefficients Surface# 2 3 4 5 6 k = −3.0576E+00−4.6156E+01 −6.9174E+00 −5.0000E+01 −7.2890E+00 A4 =  2.2615E−03 1.3207E−03  8.0709E−03  4.2242E−03 −1.6151E−02 A6 = −8.3279E−05−2.2269E−04 −2.4903E−03 −1.7645E−03  4.9827E−03 A8 = −3.3604E−07−1.9315E−05  3.4462E−04  1.4842E−04 −7.7040E−04 A10 =  1.2613E−07 2.6321E−06 −3.3055E−05  1.5008E−06  8.1725E−05 A12 = −6.0907E−08−5.7185E−08  1.9571E−06 −9.6253E−07 −5.2636E−06 A14 =  4.7826E−09−4.9423E−09 −5.0622E−08  4.9142E−08  1.5415E−07 A16 = −1.9154E−10 2.0235E−10  9.7859E−11 −4.0830E−10 −6.6440E−10 Surface # 7 8 9 10 11 k= −5.6125E+00 −2.7161E+00 −4.9386E+00  −2.3172E+00 −9.1376E−01 A4 =−9.3734E−03 −3.7064E−03 2.5436E−03 −2.0893E−02  8.1160E−03 A6 = 2.8620E−03  2.3848E−04 2.9722E−03  1.7072E−02  3.9250E−04 A8 =−2.8370E−04 −4.0129E−05 −1.8309E−03  −6.4662E−03 −1.4665E−04 A10 = 8.5416E−06 −1.6591E−05 3.7930E−04  1.4417E−03  1.6024E−04 A12 = 1.5802E−06  2.9199E−06 −3.0625E−05  −1.8181E−04 −6.4921E−05 A14 =−2.0568E−07 −3.2716E−08 3.7897E−07  1.2134E−05  1.2488E−05 A16 = 7.0715E−09 −1.1020E−08 3.8741E−08 −3.3740E−07 −8.6998E−07

In the 10th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 19 and Table 20as the following values and satisfy the following conditions:

10^(th) Embodiment f [mm] 8.36 R3/f2 0.57 Fno 1.25 f2/f1 −0.85 HFOV[deg.] 14.7 f4/R6 6.17 tan(HFOV) 0.26 Σ|f/fx| 4.90 Nmax 1.639 Rimg [mm]∞ CT1/(CT2 + CT3) 1.81 SD11/SD52 1.44 T12/(T23 + T34 + T45) 0.80

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-20 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An image capturing optical system comprising inorder from an object side to an image side: a first lens element withpositive refractive power having an object-side surface being convex; asecond lens element having negative refractive power; a third lenselement having an object-side surface being convex; a fourth lenselement; and a fifth lens element having an image-side surface beingconcave; wherein a total number of lens elements in the image capturingoptical system is five, there is an air gap between each of adjacentlens elements of the image capturing optical system, a curvature radiusof an object-side surface of the fourth lens element and a curvatureradius of an image-side surface of the fourth lens element have the samesign; wherein an effective radius of the object-side surface of thefirst lens element is SD11, an effective radius of the image-sidesurface of the fifth lens element is SD52, half of the maximal field ofview of the image capturing optical system is HFOV, a central thicknessof the first lens element is CT1, a central thickness of the second lenselement is CT2, a central thickness of the third lens element is CT3,and the following conditions are satisfied:1.0<SD11/SD52<1.6;0<tan(HFOV)<0.45; and1.0<CT1/(CT2+CT3).
 2. The image capturing optical system of claim 1,wherein the fourth lens element has positive refractive power.
 3. Theimage capturing optical system of claim 1, wherein the central thicknessof the first lens element is CT1, the central thickness of the secondlens element is CT2, the central thickness of the third lens element isCT3, and the following condition is satisfied:1.28≤CT1/(CT2+CT3).
 4. The image capturing optical system of claim 1,wherein a maximum among refractive indexes of the first lens element,the second lens element, the third lens element, the fourth lens elementand the fifth lens element is Nmax, and the following condition issatisfied:1.50<Nmax<1.75.
 5. The image capturing optical system of claim 1,wherein the second lens element has an image-side surface being concaveand the third lens element has an image-side surface being concave. 6.The image capturing optical system of claim 1, wherein the half of themaximal field of view of the image capturing optical system is HFOV, andthe following condition is satisfied:0<tan(HFOV)≤0.25.
 7. The image capturing optical system of claim 1,wherein the effective radius of the object-side surface of the firstlens element is SD11, the effective radius of the image-side surface ofthe fifth lens element is SD52, and the following condition issatisfied:1.09≤SD11/SD52<1.60.
 8. The image capturing optical system of claim 1,further comprising a prism.
 9. The image capturing optical system ofclaim 1, wherein a focal length of the second lens element is f2, afocal length of the third lens element is f3, a focal length of thefourth lens element is f4, a focal length of the fifth lens element isf5, a focal length of the y-th lens element is fy, and the followingcondition is satisfied:|f2|<|fy|, y=3,4,5.
 10. The image capturing optical system of claim 1,wherein the central thickness of the first lens element is a maximumamong central thicknesses of the first lens element, the third lenselement, the fourth lens element and the fifth lens element.
 11. Animage capturing device comprising the image capturing optical system ofclaim 1 and an image sensor disposed on an image surface of the imagecapturing optical system.
 12. An electronic device comprising the imagecapturing device of claim
 11. 13. An image capturing optical systemcomprising in order from an object side to an image side: a first lenselement with positive refractive power having an object-side surfacebeing convex; a second lens element having negative refractive power; athird lens element having an object-side surface being convex; a fourthlens element having an object-side surface being convex and animage-side surface being concave; and a fifth lens element having animage-side surface being concave; wherein a total number of lenselements in the image capturing optical system is five, there is an airgap between each of adjacent lens elements of the image capturingoptical system, a central thickness of the first lens element is largerthan a central thickness of the second lens element; wherein aneffective radius of the object-side surface of the first lens element isSD11, an effective radius of the image-side surface of the fifth lenselement is SD52, half of the maximal field of view of the imagecapturing optical system is HFOV, a focal length of the second lenselement is f2, a focal length of the third lens element is f3, and thefollowing conditions are satisfied:1.0<SD11/SD52<1.6;0<tan(HFOV)<0.45; and|f2|<|f3|.
 14. The image capturing optical system of claim 13, whereinthe focal length of the second lens element is f2, a focal length of thefirst lens element is f1, a focal length of the fourth lens element isf4, a focal length of the fifth lens element is f5, a focal length ofthe y-th lens element is fy, and the following condition is satisfied:|f2|<|fy|, y=1,4,5.
 15. The image capturing optical system of claim 13,wherein the half of the maximal field of view of the image capturingoptical system is HFOV, and the following condition is satisfied:0<tan(HFOV)≤0.25.
 16. The image capturing optical system of claim 13,wherein the third lens element has positive refractive power.
 17. Theimage capturing optical system of claim 13, wherein a maximum amongrefractive indexes of the first lens element, the second lens element,the third lens element, the fourth lens element and the fifth lenselement is Nmax, and the following condition is satisfied:1.50<Nmax<1.75.
 18. The image capturing optical system of claim 13,further comprising a prism.
 19. The image capturing optical system ofclaim 13, wherein the central thickness of the first lens element is amaximum among central thicknesses of the first lens element, the thirdlens element, the fourth lens element and the fifth lens element. 20.The image capturing optical system of claim 13, wherein a focal lengthof the image capturing optical system is f, a focal length of the firstlens element is f1, the focal length of the second lens element is f2,the focal length of the third lens element is f3, a focal length of thefourth lens element is f4, a focal length of the fifth lens element isf5, a focal length of the x-th lens element is fx, and the followingcondition is satisfied:6.0<Σ|f/fx|, x=1,2,3,4,5.
 21. The image capturing optical system ofclaim 13, wherein a focal length of the first lens element is f1, thefocal length of the second lens element is f2, and the followingcondition is satisfied:−0.88<f2/f1<0.
 22. An image capturing device comprising the imagecapturing optical system of claim 13 and an image sensor disposed on animage surface of the image capturing optical system.
 23. An electronicdevice comprising the image capturing device of claim
 22. 24. An imagecapturing optical system comprising in order from an object side to animage side: a first lens element with positive refractive power havingan object-side surface being convex and an image-side surface beingconvex; a second lens element having negative refractive power; a thirdlens element having an object-side surface being convex; a fourth lenselement having an object-side surface being convex and an image-sidesurface being concave; and a fifth lens element having an image-sidesurface being concave; wherein a total number of lens elements in theimage capturing optical system is five, there is an air gap between eachof adjacent lens elements of the image capturing optical system; whereinan effective radius of the object-side surface of the first lens elementis SD11, an effective radius of the image-side surface of the fifth lenselement is SD52, half of the maximal field of view of the imagecapturing optical system is HFOV, a focal length of the second lenselement is f2, a focal length of the third lens element is f3, and thefollowing conditions are satisfied:1.0<SD11/SD52<1.6;0<tan(HFOV)<0.45; and|f2|<|f3|.
 25. The image capturing optical system of claim 24, wherein afocal length of the first lens element is f1, the focal length of thesecond lens element is f2, a focal length of the fourth lens element isf4, a focal length of the fifth lens element is f5, a focal length ofthe y-th lens element is fy, and the following condition is satisfied:|f2|<|fy|, y=1,4,5.
 26. The image capturing optical system of claim 24,wherein the half of the maximal field of view of the image capturingoptical system is HFOV, and the following condition is satisfied:0<tan(HFOV)≤0.25.
 27. The image capturing optical system of claim 24,wherein a maximum among refractive indexes of the first lens element,the second lens element, the third lens element, the fourth lens elementand the fifth lens element is Nmax, and the following condition issatisfied:1.50<Nmax<1.75.
 28. The image capturing optical system of claim 24,further comprising a prism.
 29. The image capturing optical system ofclaim 24, wherein a focal length of the image capturing optical systemis f, a focal length of the first lens element is f1, the focal lengthof the second lens element is f2, the focal length of the third lenselement is f3, a focal length of the fourth lens element is f4, a focallength of the fifth lens element is f5, a focal length of the x-th lenselement is fx, and the following condition is satisfied:6.0<Σ|f/fx|, x=1,2,3,4,5.
 30. The image capturing optical system ofclaim 24, wherein the effective radius of the object-side surface of thefirst lens element is SD11, the effective radius of the image-sidesurface of the fifth lens element is SD52, and the following conditionis satisfied:1.09≤SD11/SD52<1.6.